@misc{indiciae34b0f3599e28,
  title = {Electronic data base in gastroenterological endoscopy.},
  author = {M Classen and F Wagner and W Swobodnik},
  year = {1991},
  doi = {10.1055/s-2007-1010602},
  url = {https://pubmed.ncbi.nlm.nih.gov/2009834/},
  note = {Source identifier: 2009834}
}